Exploring Cell Biology Concepts

This video tutorial reviews cell basics for the EOC at Spanish River High School. It covers cell theory, distinguishing between prokaryotic and eukaryotic cells, and details the functions of key organelles like the nucleus, mitochondria, and ribosomes. The tutorial also explains the structure and function of the cell membrane, including active and passive transport mechanisms. Students are advised to use guided notes as a study guide for an upcoming quiz.

What is the first component of cell theory?

• Cells can exist independently.

• All living organisms are composed of cells.

• All cells come from pre-existing cells.

• Cells are the basic unit of life.

Which type of cells lack a nucleus?

• Animal cells

• Plant cells

• Eukaryotic cells

• Prokaryotic cells

What organelle is known as the powerhouse of the cell?

• Endoplasmic reticulum

• Ribosome

• Mitochondria

• Nucleus

What is the role of ribosomes in a cell?

• Transport of proteins

• DNA replication

• Protein synthesis

• Energy production

Which of the following is a characteristic of eukaryotic cells?

• Simple cell structure

• Presence of membrane-bound organelles

• Singular circular chromosome

• Lack of nucleus

Which of the following is NOT a key difference between plant and animal cells?

• Cell wall

• Large vacuole

• Chloroplasts

• Nucleus

What is the significance of chloroplasts in plant cells?

• They synthesize proteins.

• They are involved in cellular respiration.

• They conduct photosynthesis.

• They store water.

What is the main function of the cell membrane?

• To synthesize proteins

• To produce ATP

• To store water

• To control what enters and leaves the cell

Which process does NOT require energy?

• Passive transport

• Active transport

• Exocytosis

• Endocytosis

What is the main difference between active and passive transport?

• Passive transport requires ATP, while active does not.

• Active transport moves molecules from low to high concentration, while passive does the opposite.

• Active transport involves water movement only, while passive includes other molecules.

• Passive transport can only occur in eukaryotic cells, while active transport occurs in both cell types.